What is NOT a method to file a letter of protest according to the guidelines?

Filing a letter of protest with the USPTO is a formal process that must adhere to specific guidelines. The acceptable methods for submitting a letter of protest include filing through the Trademark Electronic Application System (TEAS), submitting a paper filing, and gathering additional information through phone inquiries.

Email submission is not an acceptable method because the USPTO requires formal documentation to follow specific procedures, which are not met through email communications. This ensures that all submissions are properly recorded and processed in a secure manner. The options of filing through TEAS and submitting paper filings align with the USPTO’s structured submissions requirements, providing valid methods for serious inquiries about potential conflicts with pending trademarks.

The option involving calling for information may pertain to getting guidance or clarification about the protest process, but it does not serve as an actual method to submit the letter of protest itself. Therefore, the understanding of the lawful methods for filing is critical in navigating trademark procedures effectively.